is there a way on the roamio to record only shows IN A SPECIFIC SEASON? for example, suppose i want to have tivo record all episodes of homeland in season 2 ONLY (by definition these would all be repeats), but i don't want season 1 or season 3 recording. is this possible?
thank you

I don't think you are really going to be able to do this. The only possible way to 'easily' record episodes from a particular (past) season is:
search for the show
go to the episode list
find upcoming instances of this episode (of course this is only limited to 2 weeks of guide data)
set a single recording

The only way I know of is to setup a wishlist for each episode using the episode title.

That's the only way I know of too. Leading up to the season 3 premiere, Showtime ran all the season 2 episodes over two days. Not much help now. I wouldn't expect Showtime to air any of the older episodes until season 3 has run it's course.